Getty Images Enlarge Red Bull says Mercedes should not shy away from competition by blocking a change in regulations to allow an additional engine update next year. F1's engine freeze Current rules state a certain amount of development can be undertaken on engines year-on-year, with manufacturers able to change 48% of 45 engine components at the end of the current campaign. But changes are only allowed to take place out of season and will be scaled down from 2015 onwards. This season engines were homologated on February 28, after which point changes were only allowed for reliability, safety or cost saving reasons. As a result of that homologation, Renault and Ferrari have spent much of...
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